From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D643C433FE for ; Tue, 17 May 2022 12:13:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344833AbiEQMNh (ORCPT ); Tue, 17 May 2022 08:13:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345786AbiEQMN1 (ORCPT ); Tue, 17 May 2022 08:13:27 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0A6546651 for ; Tue, 17 May 2022 05:13:23 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id w17-20020a17090a529100b001db302efed6so2052523pjh.4 for ; Tue, 17 May 2022 05:13:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=from:to:cc:in-reply-to:references:subject:message-id:date :mime-version:content-transfer-encoding; bh=0CFZi2WdHh+fWnk2m1bIXH7l+E5jrgN/oQfn0swAlk0=; b=J1JomReZIjMEXQobTzVFw7ummBWdomtyzdyFFet3/kcc/jM+gvVqVpq2Vc/6ULmkci TrdzxzJOgkhyPeKaEB8TyJ7GUYbqXaJZChg1Rzz1OPOY2zKD77e7B0Ud/Ct9XzPpczfQ yUdrdQGcMoQGHU1XbBhSp/qOlzwdGZgqOReniRcnAHlJWwroi239fLHrS611gIYdCqsQ s1AQKsJqLq7O3ZWsoslHYwzyf+cl8QKLKbhwG54yFd7Xi3PMk4WPr07FuzlA155FlJn/ w1x8iegRjjG7bDocm0Y6wTLVG0E4NoUC9hTcL58Y6RzIYndo/yNAwrJ53a0ICDcGifsf mAVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:in-reply-to:references:subject :message-id:date:mime-version:content-transfer-encoding; bh=0CFZi2WdHh+fWnk2m1bIXH7l+E5jrgN/oQfn0swAlk0=; b=reC4fmIeRCj2M8TySuhzatmGLD5Hh0FyGIB0Uwzj3fEBV6TwJpqs2cX6iSKa1ap9Os BQh/B+e9sPDNdMNhgMKJ3deYx1JbRbgBQBUplIDiHNz16W2Ho8rhJJHPzivGW2J2akyG nhW6ZCLKr/9U4rcYpKufAZduDQ1k3KAXeW8HyTo+3LyVo7b9hXRlkZkwuofqSa/ws7mO 6J94FpHaUO8s/s31TOGRG47zZLmaU6BcetGDKhH7ODrwFgl4e1mddT/UPT9/+0IbxUzv EyjdWp9zZzY11/zWwCgDpGOur957DkjQuV1JSHL4ZM4r2gFw5lsfua9N+nsQUK2fmu1j 5olg== X-Gm-Message-State: AOAM530NVam9Yu9+5L5BTG+/K/7hsNzk63QxvGIaithdDamlXjpcjLdg kW7eSK4TU4r+wUNAyA/obaHPtw== X-Google-Smtp-Source: ABdhPJyDx71heU0gfcxf+CGzQq7lXgAi5h3sMUNbGKzfQW4j5ZJ5G1UoPX9LPtNbpGfbEUenH6f63w== X-Received: by 2002:a17:903:1248:b0:151:9708:d586 with SMTP id u8-20020a170903124800b001519708d586mr22127846plh.15.1652789603163; Tue, 17 May 2022 05:13:23 -0700 (PDT) Received: from [127.0.1.1] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id b10-20020a170902650a00b0015e8d4eb269sm8754436plk.179.2022.05.17.05.13.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 May 2022 05:13:21 -0700 (PDT) From: Jens Axboe To: tj@kernel.org, bh1scw@gmail.com Cc: songmuchun@bytedance.com, linux-block@vger.kernel.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20220516173930.159535-1-bh1scw@gmail.com> References: <20220516173930.159535-1-bh1scw@gmail.com> Subject: Re: [PATCH] blk-cgroup: Remove unnecessary rcu_read_lock/unlock() Message-Id: <165278960081.13853.15178111681664943346.b4-ty@kernel.dk> Date: Tue, 17 May 2022 06:13:20 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 17 May 2022 01:39:30 +0800, bh1scw@gmail.com wrote: > From: Fanjun Kong > > spin_lock_irq/spin_unlock_irq contains preempt_disable/enable(). > Which can serve as RCU read-side critical region, so remove > rcu_read_lock/unlock(). > > > [...] Applied, thanks! [1/1] blk-cgroup: Remove unnecessary rcu_read_lock/unlock() commit: 77c570a1ea85ba4ab135c61a028420a6e9fe77f3 Best regards, -- Jens Axboe